" This is exactly the technology Panasonic and Olympus need to implement on Micro Four Thirds. "

Speaking of 70D sensor technology, how are mirrorless cameras going to benefit from this? Will it improve their Auto-C focusing, which is one of the major short-comings of the m4/3 system? And, is this technology Canon owned or will we see it on many brands in a few years?

Canon's Live View focusing is exactly what is being used in mirror-less cameras.What is going on is using the same sensor for auto-focus that is used for taking pictures.This is typically referred to as contrast based auto-focus.

The traditional method uses a mirror to redirect the imaging to both the viewfinder and an auto-focus sensor. When it is time to take a picture, the mirror flips up and the image sensor is revealed to capture the image. During this brief time (most of the time less than a second) neither the optical viewfinder nor the auto-focus sensor see the image as all the light is directed at the image sensor. This is often referred to as phase detection autofocus.

With a modern DSLR, you have an option to use either contrast based or phase detection auto-focus; though not at the same time.

This new method is developed by Canon, but other companies will probably pay a fee to use their technology or develop something similar for their own gear.

As far as the short-comings with the m4/3 system... everything is a compromise. It depends on what is the best compromise for you. There is nothing that is 100% perfect in the realm of photography; canon included.

m4/3 so far has been the best compromise I've found. With my small hands, it feels very comfortable and light enough that I could bring them along anywhere. IQ is good enough for me. Saw 60D (which was my first DSRL) with 15-85 the other day, and it looks huge!!! Just looking at it made my back hurt.

And for me, the XTi/400D was too small for my hands and the 5DIII feels natural. I do not notice the weight difference unless I have one in each hand. Nikon's ergonomics seem to make my hands feel like they are going to cramp for some reason; which I have yet to figure out why.

Every company has some good things as well as some things they could do better. The reason why there is no consensus on which is the best is due to the consumers having different wants and needs. For example, what you and I find better between m4/3 and Canon.